Cost-Effective

Solar energy benefits your pocket. Solar powered systems obviously require an initial investment. However, in the long run there will be no incurring costs whatsoever (unless your panels suffer a fall, and break).

Low-Maintenance

Solar devices have no moving parts in their design, which means that they don't require special protection (like windmills, for example). Solar installations can last for decades, with little to no maintenance required.

Renewable

Renewable
Solar energy will not run out until the sun stops shining (in a few billion years). We cannot use it up, like we can do with fossil fuels (natural gas, oil, coal). The sparser the world fuel resources become, the more expensive they will be. Fossil fuels will eventually end, but before they do, their price will keep increasing day by day.

Silent

In comparison to other renewable energy sources (wind and water), solar devices make absolutely no noise during their operation. Wind and water power generators produce a lot of noise, which may be frowned upon by neighbors of the homeowner who started to use a wind or water power generator.